AnalyzerSentence analysis6SpansSentence歴史的な大虐殺を忘れてはいけない。1000 character limitAnalyzeSentence歴れき史し的てきな大だい虐ぎゃく殺さつを忘わすれてはいけない。Span Details歴れき史し的てきhistorical; traditional; historicna-adjectiveなadnominal form of the copula after a na-adjectivegrammar大だい虐ぎゃく殺さつmassacre; genocide; holocaustnounをobject markergrammar忘わすれforget; leave behind-> 忘れるichidan verbてはいけない。must not; may notgrammar